<ol>
  <li>Mix the egg yolks, sugar, and cornstarch with 1/3 of the milk.</li>
  <li>In a saucepan, boil 2/3 of the milk with the lemon peel and cinnamon.</li>
  <li>After 3 minutes, remove from the heat and take out the lemon and cinnamon.</li>
  <li>Slowly add the egg mixture to the hot milk through a strainer to ensure there are no lumps.</li>
  <li>Return it to the heat until it boils, stirring constantly.</li>
  <li>Once the mixture has begun to thicken, remove from the heat and put it into individual bowls to cool.</li>
  <li>For an authentic finish, sprinkle with sugar and brown with a blowtorch or under a preheated broiler to caramelize.</li>
</ol>
